Nail-machine



(No Model.) 2 Sheets-Sheet 2.

G. E. BUSOHIOK 88 F. RAUTERT.

' `NAIL MACHINE.

No. 884,422. Patented June 12, 1888.

INITED STATES F F ICE@ Arr-Nr NAIL-MACHINE.

SPECIFICATION forming part of Letters Patent No. 384,422, dated `lune 12, 1888.

Application filed August 23, 1887. $erial No. 247.696. (No model.)

.To @ZZ whom t may concern.-

Be it known that we, G UsTAvUs E. BUSOHIOK and FRITZ RAUTERT, of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in a Nail- Machine, of which the following is a full, clear,

and exact description, that will enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in that class of machines employed in the manufacture of nails and spikes, the object being to provide a machine that is more especially adapted to produce a nail or analogous article of a triangular form in cross-section.

The nature of this invention consists in constructing a machine that embodies three diskforming rolls or roller-dies set in a triangular plane relative to each other, the die faces or peripheries of which have a rolling orV fric` tional contact, and are each provided with die depressions or cavities that correspond to onethird of the diameter of a full nail.

Figure l is a front elevation of a machine embodying our improved features. Fig. 2 is a side view and section with the roller B2 and parts removed; Fig. 3, a side view of one of the three rollers, a portion being broken away, and showing the manner of securing the segmental die-sections forming the periphery; and Fig. 4, a broken-away transverse section of the same.

In the drawings, A represents the supporting-frame; A', the main or driving shaft; A2, the balance-wheel, and A3 the band-pulley mounted on said shaft, which is in turn provided With suitable journal-bearings in the supporting-frame.

The three forming-rollers B B' B2 are set in a triangular plane relative to each other and form ajunction at about the angle shown in Fig. l, thejoining faces having a close rolling or frictional contact and leaving an opening in the center, in accordance with the depressions or design of the dies in the faces of the same for the insertion of the nail rod or stock. The rollers revolve in the direction indicated by the arrows-that is, outwardly from each other-the stock being fed in from the back of the machine.

The die-roller B is mounted onthe drivingshaft, the companion rollers B B2 being mounted ou the independent shafts C C, which are provided with adjustablejournal-bcarings.

The journal-blocks a a are rigidly secured to the main frame, and are connected at the back by the bridge ai, belted at each end to said blocks. The adjustable bearing yoke or yokes C2 are placed between the blocks a a', and are adjustable toward a common center by means of the s et screws a3, and laterally by the setscrews at By this arrangement the wear on the roller-dies may be compensated for and the proper angle of adjustment maiutained.

VThe beveled gear-wheels D D are mounted on the driving-shaft, and are placed on each side of and close up against the roller B. 'Ihese gear-wheels engage with the companion gearwheels D2 D3, mounted, respectively, on the shafts C C, and placed close against the outer side of the die-rollers B B", as shown in Fig. l. By this means the required motion is transmitted to the companion parts. These gearwheels may be cast with and form an integral part of the roller-dies, or made separately therefrom, as practical working may require.

The peripheries or faces of the roller-dies are made up of a number of detachable sections, F, each section corresponding to the length of the nail or similar article to be produced, so that the line of separation relative to the heads and points will be coincident. The segment diesections are provided with the flanges b, which fit closely to the periphery of the rollers, and are secured thereto by means of the screws d.

rIhe dies may be formed in the contacting faces of the rollers instead or" in detachable sections, with the same result; but the plan illustrated is preferred, for the reason that when the dies become too much worn they can be replaced by duplicates and the same rollers used indefinitely.

Having thus described our invention, what we claim as new, and desire to secure by Iletters Patent, is-

In a nail-machine, the combination,with the forming-roller B, mounted upon the main shaft, of the companion roller-dies B B2, set at an oblique angle relative to the roller B, and

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mounted upon independent shafts, said ,dies arranged to operate substantially as and for having a rolling Contact and being provided the purpose seb forth. on their peripheries with a depression equal i i 4 1 f to that of oneiliird the diameter of a nai, the xUSlAvUbfn' BUSCHUJIX' FRITA RAUDERT. 5 shank whereof is trlangnlar'in cross-section,

the gear-Wheels D D Dl D7 the journal-blocks Witnesses: a a', the bridge a, the yoke 01' yokes G2, and L. M. FREEMAN, the adjusting-screws a3 a4, all combined and L. B. COUPLAND. 

